Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-24 01:11:11 +03:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

motorola/mex68kecb.cpp: Added Abort button (NMI) and fixed a comment. (#12719)

Browse Source
This commit is contained in:
Chris Hanson 2024-09-04 04:45:25 -07:00 committed by GitHub
parent 7d29a2a98c
commit be672ec12a
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
1 changed files with 14 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/mame/motorola/mex68kecb.cpp
View File

@ -55,6 +55,8 @@ public:
void mex68kecb(machine_config &config) ATTR_COLD;
DECLARE_INPUT_CHANGED_MEMBER(abort_button);
protected:
virtual void machine_reset() override ATTR_COLD;
@ -81,6 +83,7 @@ private:
required_device<rs232_port_device> m_host;
};
/* Input ports */
static INPUT_PORTS_START( mex68kecb )
PORT_START("ACIA1_BAUD")
@ -104,6 +107,9 @@ static INPUT_PORTS_START( mex68kecb )
PORT_DIPSETTING(0x04, "300")
PORT_DIPSETTING(0x02, "150")
PORT_DIPSETTING(0x01, "110")
PORT_START("ABORT")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_NAME("Abort button") PORT_CODE(KEYCODE_F1) PORT_CHANGED_MEMBER(DEVICE_SELF, mex68kecb_state, abort_button, 0)
INPUT_PORTS_END
@ -138,7 +144,7 @@ void mex68kecb_state::mex68kecb(machine_config &config)
// Optional 6800 peripherals at IRQ4
m_acia1->irq_handler().set_inputline(m_maincpu, M68K_IRQ_5);
m_acia2->irq_handler().set_inputline(m_maincpu, M68K_IRQ_6);
// ABORT Button at IRQ7
// Abort button at IRQ7, see abort_button()
// Set up terminal RS-232.
@ -198,7 +204,13 @@ void mex68kecb_state::write_acia_clock(int state)
}
}
// Boot vector handler, the PCB hardwires the first 16 bytes from 0xfc0000 to 0x0 at reset.
// Abort button handler
INPUT_CHANGED_MEMBER(mex68kecb_state::abort_button)
{
m_maincpu->set_input_line(M68K_IRQ_7, newval ? CLEAR_LINE : ASSERT_LINE); // active low
}
// Boot vector handler, the PCB hardwires the first 8 bytes from 0x008000 to 0x0 at reset.
void mex68kecb_state::bootvect_w(offs_t offset, uint16_t data, uint16_t mem_mask)
{
COMBINE_DATA(&m_sysram[offset]);